Dude thanx for the wonderful joke.
You only pay 4000 riyals and you live in a compound. Either the compound is own by your uncle or the next scenario is that you have rented a room with an attached bathroom in the compound and you are paying 4000 riyals for it.
Seriously you wanna sublet that villa for 8000 riyals. let me know. I know lots of people who might be interested in taking that villa
And as for the 5% rule, medo was saying that when he brought his car from dubai to Qatar he had to pay 5% as tax. And yes it implies to all imports.

Man sometimes I feel there are two Qatars. one for people like amnesia and one for people like us.